IOU is an Android app developed by S. Tubin (Pyatnitskoe shosse, 25-1-390 Moscow 125430 Russian Federation).

IOU first became available on 30 Dec 2011. It is estimated that IOU has been downloaded between 100000 and 500000 times from the Play Store.

IOU 4.30a requires the following permissions:

Allows applications to access information about networks.

Allows applications to open network sockets.

Allows an application to read the user's contacts data.

Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting. If you don't request this permission, you will not receive the broadcast at that time. Though holding this permission does not have any security implications, it can have a negative impact on the user experience by increasing the amount of time it takes the system to start and allowing applications to have themselves running without the user being aware of them. As such, you must explicitly declare your use of this facility to make that visible to the user.

Allows an app to use fingerprint hardware.

Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.

Allows an application to write to external storage.